Madame Marissa learned that her slave had been lying to her. She was mad and she used her boots to punish him. She had him lick the soles of her boots so that he would learn never to let his tongue utter falsehoods again. She did not listen to him and neither did she forgive him when he begged for mercy because she was sure he knew what he was doing when he lied to her.
Mistress BlackDiamoond wanted to show her friend how to torture a slave. her friend was interested in getting a slave and it was essential for her to know how to punish him because she was going to need those skills. So mistress BlackDiamoond showed her friend how to do it and she even asked her to try it. They crushed the slave's balls with their boots and had him lick the soles of their boots.
Mistress Gaia was bored and the only thing that interested her was to humiliate her slave. She could not humiliate him for nothing so she looked for a tiny he had made and she used it to humiliate him. She had him lick the soles of her boots and she cruelly had him do the same to her stinky socks. She went and brought more shoes for him to lick too.